{661] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 367 
RHIPIDOGLOSSA. 
MARGARITA OBSCURA Gould, Plate XXIV, fig. 156. (p. 508.) 
Invert., ed. i, p. 253, fig. 171", 18415; ed. il, p. 283, fig. 545. Turbo obscurus Cou- 
thouy, Boston Journ, Nat. Hist., vol. ii, p. 100, Plate 3, fig. 2, 1838. 
Stonington, Connecticut, to Labrador. Rareand confined to the outer 
waters south of Cape Cod; off Martha’s Vineyard, 20 to 25 fathoms. 
Stonington, from haddock’s stomach, (Linsley). Common in Massachu- 
setts Bay, Casco Bay, and in the Bay of Fundy, from extreme low- 
water mark to 100 fathoms. East of Saint George’s Bank, in 430 fath- 
oms, (S. I. Smith). 
Margarita ornata Dekay, N. Y. Mollusea, p. 107, Plate 6, fig. 104, 1843, 
was described as occurring in the vicinity of New York, but I have not 
met with it in Long Island Sound, 
DOCOGLOSSA. 
ACMA TESTUDINALIS Forbes and Hanley. Plate XXIV, figs. 159, 
159a. (p. 307.) 
British Mollusca, vol. ii, p. 434, Plate 62, figs. 8,9, and Plate A A, fig. 2; Car- 
penter, Report of British Association for 1856, pp. 219, 366, 1857; Dall (sub- 
genus, Collisella Dall), American Journal of Conchology, vol. vi, p. 249, 1871. 
Lottia testudinalis Gould, Invert., ed. i, p. 153, fig. 12.  Tectura testudinalis 
Gould, Invert., ed. ii, p. 267, fig. 529. Patella testudinalis Miiller, Prodromus 
Zool. Danica, p. 227, 1776. 
Variety alveus. (tig. 159 a). Patella alveus Conrad, Journal Acad. Nat. Sciences, 
Philadelphia, vol. vi, Plate 11, fig.20, 1831. Lottia alveus Gould, Invert., ed. i, 
p- 154, fig. 13. Tectura alveus Gould, Invert., ed. ii, p. 269, fig. 530. 
Long Island Sound to the Arctic Ocean ; cireumpolar. It extends 
southward on the European coasts to Southern Sweden, England, and 
Ireland; in the North Pacific, southward to Sitka and the Island of 
Jesso, Japan. It is comparatively rare and local south of Cape Cod ; 
at New Haven, very rare; Watch Hill, Rhode Island; Martha’s Vine- 
yard, Cuttyhunk, and adjacent islands. Huntington and Greenport, 
Long Island (S. Smith). Fossilin the Post-Pliocene of Labrador (Pack- 
ard); Greenland, Scandinavia, and Great Britain. 
POLYPLACOPHORA. 
CHATOPLEURA APICULATA Carpenter. Plate XXV, fig. 167. 
Chiton apiculatus Say, Amer. Conch., part vii, appendix, (?) 1834; Binney’s Say, 
p- 231; Gould, Invert., ed. i, p. 146, fig. 20; ed. ii, p. 258, fig. 522. Lepto- 
chiton apiculatus, this Report, p. 399. 
Cape Cod to Eastern and Western Florida. Common in Vineyard 
Sound and Buzzard’s Bay, in 5 to 12 fathoms, shelly. Off New Lon- 
don, Connecticut (coll. T. M. Prudden),. 
Dr. P. P. Carpenter informs me that this species belongs to the genus 
Chetopleura of Gray (non Adams). 
